List of Articles Gas Refineries Open Access Article Abstract Page Full-Text 1 - Presenting a Model of Product Development Process Management in Gas Refining Company Hooman Keshavarzi Seyedjavad Iranban Moqaddaseh Mohammadian 10.30495/jsm.2021.1933186.1488 Open Access Article Abstract Page Full-Text 2 - Designing a Product Development Process Model in Gas Refining Companies Based on Grounded Theory Hooman Keshavarzi Sayed Javad Iranban Moghadeseh Mohammadian 10.30495/msds.2023.1974735.1103 Open Access Article Abstract Page Full-Text 3 - Measuring the Economic Efficiencies and Productivity of Natural Gas Refineries in Iran علی امامی تیمور محمدی عارف بهروز